50results about How to "To achieve the purpose of heat exchange" patented technology

The invention relates to a dissolving heat absorption type chemical heat pump which comprises an evaporator, a condenser, a reactor, an air compressor, a solid-liquid separator, a circulating heat exchanger and a hot-end heat exchanger, wherein a cold-end heat exchange pipe of the evaporator is communicated with cold-end user media; a conveying pipe connected with the evaporator is communicated with more than two liquid distribution pipes arranged on the upper part of the reactor by virtue of a circulating pump respectively through the condenser, the circulating heat exchanger and a conveyingcoupling pipe, and a plurality of liquid outlets are arranged on each liquid distribution pipe; a vapor pipe arranged on the top of the reactor is connected with the evaporator respectively through the hot-end heat exchanger, the air compressor, the reactor, a backflow coupling pipe, the circulating heat exchanger and a backflow pipe;; the hot-end heat exchanger and hot-end user medium are communicated; the bottom of the reactor is communicated with the condenser; the solid-liquid separator is arranged between the bottom of the condenser and the top of the evaporator; and a return liquid portof the solid-liquid separator is communicated with the reactor by virtue of a return liquid pipe. The chemical heat pump provided by the invention has the advantages of simple structure, stable heat exchange efficiency, and low use-cost.

The invention provides a polyamide-6 granula nitrogen drying heat exchange system. Damp and hot nitrogen is discharged from the top of a drying tower and is conveyed to a first nitrogen circulating fan via a nitrogen filter; nitrogen coming out from the first nitrogen circulating fan is divided into two parts; one part enters a spray cooling system via a nitrogen heat exchanger and the other part is conveyed to a nitrogen inlet in the middle of the drying tower after being heated by a first nitrogen heater; the nitrogen in the spraying cooling system is discharged from a nitrogen outlet after being cooled, passes through the nitrogen heat exchanger, a second nitrogen circulating fan, a nitrogen purifying device and a second nitrogen heater in order and is divided into two parts at the outlet of the second nitrogen heater, the two parts entering the drying tower via two nitrogen inlets at a taper sealing head at the bottom of the drying tower; wet polyamide-6 granulas enter the drying tower from the top of the drying tower and are discharged from the bottom end of the drying tower after drying to a polyamide-6 granula cooling bin system. The system is characterized in that the objective of heat exchange is achieved by using high-temperature damp and hot nitrogen to heat low-temperature nitrogen, so that energy is comprehensively utilized, energy consumption is reduced and the production cost is reduced.

The invention discloses a method, process and equipment for recycling low-temperature afterheat generated in a roasting process of producing sulfuric acid from an iron pyrite. In the invention, a three-room heat storage type heat exchanger is adopted, low-temperature afterheat in the roasting process of producing the sulfuric acid from the iron pyrite is subjected to the heat exchange of low-temperature raw material gas and furnace front air according to a designed operation process and is transferred to furnace inlet air, and then the furnace inlet air brings the afterheat into a roasting boiling furnace to achieve the purpose of recycling the low-temperature afterheat, which has significance to saving energy, reducing emission and developing low-carbon economy.

The invention provides a heat exchanger with a multi-start helical fluted tube. The heat exchanger comprises an outer tube (1) and an inner tube (2) nested in the outer tube. The inner tube (2) comprises two ends (21) and a multi-start spiral tube (22) disposed between the ends (21); the cross section of the multi-start spiral tube (22) is a circle (3) made up of wavy lines; the multi-start spiral tube (22) is formed by points of the circle (3), spirally extending around the center of the circle (3) along a same spiral path. The inner tube of the heat exchanger is in the multi-start spiral fluted structure, thus increase in the heat exchange area and improvement in the heat exchange coefficient help greatly improve the heat exchange effect, the heat exchanger can serve as both an evaporator and a condenser, and the applicable range of the heat exchanger is widened; the structure is convenient and simple to process and form; the outer wall or inner wall of the multi-start spiral tube (22) is provided with an embossed structure, heat exchange capacity is further improved, and the applicable range is widened; adding heat exchange fins is not required, the cost is lowered, and the competitiveness of the product is improved in terms of multiple aspects.

The invention discloses a direct-heating hot water boiler which is composed of a boiler body, a fume pipe, a combustor, filler, a chimney and the like. The boiler body is of a vertical cylindrical structure and is divided into a filler chamber and a water storage chamber through a supporting partition plate. The fume pipe is located on the middle lower portion of the water storage chamber. Heat dissipation fin plates are installed on the outer wall of the pipe, and the heat exchange area can be increased. An exhaust pipe is assembled to the upper portion of the filler chamber, so that smoke is exhausted upwards evenly. A water blocking cap is used for preventing water from entering the fume pipe. An inlet water distributor is arranged in the filler chamber, so that water is sprayed downwards evenly. Through a temperature-resistant filtering cotton plate, residual water in the smoke can be filtered out and returned back to the water storage chamber. According to the direct-heating hot water boiler, the one cavity design is adopted, the structure is compact, and materials are saved and are about one quarter those of an ordinary boiler; the size is small, the space is saved, the manufacturing cost is low, through the structure, secondary heat exchange can be conducted, and the heat efficiency reaches 97% or over; and smoke exhaust indexes are higher than national standards, the smoke exhaust temperature is lower than 50 DEG C, and the heat efficiency is greatly improved.

An air preheating device utilizing boiler flue gas for heat exchanging comprises a filtering heat exchanging barrel, a flue gas inflow pipe, a flue gas exhausting pipe, an air inflow pipe and an air exhausting pipe; the flue gas inflow pipe is arranged on the middle of the bottom end of the filtering heat exchanging barrel; the flue gas exhausting pipe is arranged on the middle of the top end of the filtering heat exchanging barrel; the air inflow pipe is arranged at the upper right end of the filtering heat exchanging barrel; the air exhausting pipe is arranged at the lower left end of the filtering heat exchanging barrel; the interior of the filtering heat exchanging barrel is composed of a smoke collecting filtering chamber and a heat exchanging chamber; the smoke collecting filtering chamber is arranged at the lower end in the filtering heat exchanging barrel; the heat exchanging chamber is arranged at the upper end in the filtering heat exchanging barrel; the top end of the smokecollecting filtering chamber is connected with the heat exchanging chamber through a gas conveying pipe; the middle of the bottom end of the smoke collecting filtering chamber is connected with the flue gas inflow pipe; the middle of the top end of the heat exchanging chamber is connected with the flue gas exhausting pipe; the upper right end of the heat exchanging chamber is connected with the air flow pipe; and the lower left end of the heat exchanging chamber is connected with the air exhausting pipe. The air preheating device utilizing the boiler flue gas for heat exchanging can effectively utilize the boiler flue gas to preheat cold air, and it is facilitated that after the air enters a boiler, fuel can be combusted more sufficiently.

The invention is applicable to the technical field of heat exchangers, and provides a tubular heat exchanger. The tubular heat exchanger comprises a tube shell, wherein a heat flow inlet, a heat flowoutlet, a cold flow inlet and a cold flow outlet are connected to the tube shell respectively, and the heat flow inlet and the heat flow outlet are connected with a heat exchange assembly in the tubeshell; and a filter is arranged between the heat flow inlet and the tube shell, and a water purification assembly is arranged in the filter. Heat flow enters the tube shell through the heat flow inletand flows in the heat exchange assembly, and cold flow enters the tube shell through the cold flow inlet and flows on the outer side of the heat exchange assembly to perform heat exchange with the heat flow in the heat exchange assembly, so that the purpose of heat exchange is achieved; and meanwhile, in order to the solve the problem that water scale is easily produced when hot water enters theheat exchange assembly from the filter and flows, the filter is particularly arranged, the problem about water quality is solved fundamentally by the water purification assembly in the filter, the probability of water scale production is reduced, and therefore, the trouble caused by cleaning of the heat exchange assembly is avoided.

The invention relates to gasification equipment with a spraying structure. The gasification equipment comprises a gasification furnace body, an overhead nozzle mechanism arranged at the top of the gasification furnace body and a middle nozzle mechanism arranged on the side surface of the gasification furnace body, a bottom water tank is arranged in the gasification equipment, and the overhead nozzle mechanism and the middle nozzle mechanism are respectively communicated with the bottom water tank. Compared with the prior art, the invention aims at an existing gasification furnace, the sprayingstructure is arranged, the spray gasification techniques are introduced, the water heated by the flue gas is sprayed to a heated tube bundle at normal pressure; in addition, due to the evaporated andcondensed water after gasification, the heated tube bundle can be better promoted to be in full contact with water and flue gas, the problem of insufficient heat exchange is effectively solved, flowing of a gas field is increased in the gasification equipment, flowing of mixed gas of water and flue gas coming from the lower portion upwards is driven, and thus heat exchange is enhanced, and energyconsumption is reduced.

The invention provides a heat exchanger. The heat exchanger comprises a front heat exchange part, a rear heat exchange part and at least one middle heat exchange part located between the front heat exchange part and the rear heat exchange part. The upper portion of each heat exchange part is provided with a radiation cavity, and the multiple radiation cavities are connected in a through manner to form a combustion chamber of the heat exchanger. Each heat exchange part is provided with a water outlet, a water inlet and water channel interlayers, and the multiple water channel interlayers of each heat exchange part are arranged in a staggered manner so as to form a heat exchange water channel. The heat exchange water channel of each heat exchange part comprises a first heat exchange water channel body and a second heat exchange water channel body which communicate with the corresponding water outlet and the corresponding water inlet. Each second heat exchange water channel body is arranged completely around the corresponding radiation cavity. According to the heat exchanger, the heat exchange efficiency can be effectively improved, no refractory matter is needed for heat insulation, and the service life is prolonged. The invention further provides a full premixing hot water boiler and a control method thereof.

The invention discloses a water-cooled heat exchanger which comprises a circular heat conduction barrel and a cylindrical shell. Openings are formed in two ends of the heat conduction barrel, the shell encircles the heat conduction barrel, the side walls of the shell, two end covers of the shell and the side walls of the heat conduction barrel encircle to form a water injection chamber, cold water can be accommodated in the water injection chamber, a plurality of heat conduction plates which are positioned in the water injection chamber are arranged on the side walls of the heat conduction barrel, gaps are reserved among the heat conduction plates, the cold water can flow in the gaps, and a water inlet and a water outlet are respectively formed in the two end covers. The water-cooled heat exchanger has the advantages that the cold water is injected into the water injection chamber via the water inlet, the heat conduction plates are in sufficient contact with the cold water, and heat which is transferred from the heat conduction barrel is transferred to the cold water, so that the heat exchange purpose can be achieved; the cold water continuously absorbs the heat of the heat conduction plates when flowing in the water injection chamber and then is turned into hot water, the hot water is drained via the water outlet, and accordingly the heat exchange efficiency of the heat exchanger can be improved.

The invention relates to the technical field of steam turbine cylinder block casting, and particularly relates to a steam turbine cylinder block casting pouring system and a casting process. The steam turbine cylinder block casting pouring system comprises a pouring gate device arranged in a sand mold, a plurality of slag collecting tables communicating with the pouring gate device and located on a parting surface of the sand mold, a plurality of dead heads fixedly connected with a casting, a plurality of inner chilling blocks connected with the inner side face of the casting, a plurality of outer chilling blocks connected with the outer side face of the casting, a plurality of cooling pipes arranged in the sand mold and a cooling medium generating device communicating with one ends of the cooling pipes; and the pouring gate device, the slag collecting tables, the dead heads, the inner chilling blocks and the outer chilling blocks all communicate with a pouring cavity of the sand mold. The steam turbine cylinder block casting pouring system and the casting process can solve the problem of sand burning in the casting process of the steam turbine cylinder block casting, and operation in the casting process is more convenient.

The invention discloses a nano-particle resuspension liquid cooling device and a cooling method.The liquid cooling device comprises a heat dissipation shell and an electrode arranged in the heat dissipation shell in a penetrating mode, and an inner cavity of the heat dissipation shell is filled with nano-suspension liquid; and the liquid level of the nano suspension liquid in the heat dissipation shell is higher than or lower than the horizontal plane of the electrode. After the lower surface of the heat dissipation shell obtains heat, the heat is conducted to an inner cavity of the heat dissipation shell to be subjected to heat exchange with the nanometer suspension liquid, and the nanometer suspension liquid stored in the heat dissipation shell gradually rises due to heating vaporization. High voltage is loaded on the electrode, so that electric fields are respectively formed between the electrode and the upper cooling clamping plate and between the electrode and the lower cooling clamping plate, potential differences are generated between the electrode and the upper cooling clamping plate and between the electrode and the lower cooling clamping plate, and nano particles in the nano suspension are accelerated to suspend and rise again under the action of the electric fields; heat of nano particles in the nano suspension liquid is conducted to the upper cooling clamping plate for heat exchange, and therefore the purposes of heat dissipation and cooling are achieved.

The invention relates to a fire extinguisher. The fire extinguisher comprises a fire extinguisher body, a heat exchanging device, a transmission device and a high-pressure gas conveying pipe, wherein the fire extinguisher body comprises a first circular pipe and a second circular pipe, the first circular pipe sleeves the second circular pipe, an outer cavity is formed between the first circular pipe and the second circular pipe, an inner cavity is formed in the second circular pipe, the heat exchanging device is mounted in the outer cavity, the transmission device is mounted in the inner cavity, one end of the high-pressure gas conveying pipe is connected with one end of the fire extinguisher body, and the other end of the high-pressure gas conveying pipe penetrates the heat exchanging device and detachably fixedly connected with the transmission device. The fire extinguisher has the advantages that high-pressure gas is used as the transmission source and the cooling source, low-temperature low-oxygen fire source waste gas is used as the fire extinguishing medium and directly acts on the center of a fire source through cooling, the fire source temperature can be lowered while the oxygen around the fire source can be isolated, and fast fire extinguishing is achieved; the fire extinguisher is low in air density, large in flow and free of liquid pollution during fire extinguishing, so that the fire extinguisher can efficiently and continuously extinguish fire and does not cause secondary damage to property.

The invention discloses integrated intelligent steering digital sound equipment, and belongs to the technical field of digital sound equipment, the integrated intelligent steering digital sound equipment comprises an equipment body, a front cover plate is arranged in front of the equipment body, two horn blocking nets are clamped in the middle of the front cover plate, and supports are clamped on the outer walls of the two horn blocking nets. According to the device, the device body, the front cover plate, the loudspeaker blocking net, the support, the connecting cylinder, the spring, the fixing rod, the clamping rod and the clamping groove plate are arranged, the clamping rod is designed to be rectangular and is matched with the clamping groove plate, the purpose of limiting the connecting cylinder, the support and the loudspeaker blocking net is effectively achieved, the loudspeaker blocking net is shaken, dust and impurities fall down together, and compared with a traditional external wiping mode, the device is more convenient to use. According to the scheme, by changing the angle of the horn blocking net, the horn blocking net and the horn mouth are staggered, the purpose of cleaning the two faces of the horn blocking net is effectively achieved, tiny dust is not prone to being pushed into the horn blocking net through the separation holes in the horn blocking net, cleaning is convenient, and meanwhile the playing sound quality of the equipment body is guaranteed.

The invention provides an air conditioning system which includes an air conditioner, a first fan and a second fan. The air conditioner includes a refrigeration module, a heating module and a refrigerant connection pipe. The refrigeration module and the heating module are connected through the refrigerant connection pipe, an air outlet of the refrigeration module communicates with an indoor air supply opening through the first fan, and an air outlet of the heating module communicates with an outdoor air outlet through the second fan. The air pressure of the air delivery can be increased throughthe first fan and the second fan, the convection of the air is realized, and the purpose of heat exchange of the air conditioner is achieved; and the fans in the air conditioner are no longer used for maintaining the high air pressure, so that the high rotating speed state of the fans of the air conditioner does not need to be continuously maintained, the noise and vibration of the entire air conditioner are further effectively reduced, and the problem that the air resistance of an existing air conditioner air duct is large, for the purpose of ensuring the normal operation of the air conditioner, the air conditioner fan needs to be maintained at a high speed state to increase the air pressure, and large noise and vibration of the air conditioner are caused is solved.

The invention relates to the field of burners, in particular to a flat plate type burner and a burning heating system. The flat plate type burner is provided with a flat plate type installation panel having more than two burning positions, nozzles and a flame stabilizing plate, wherein the nozzles are located in the centers of the burning positions. The nozzles are perpendicular to the flat plate type installation panel, and the atomizing ranges of the adjacent nozzles are partially overlapped. The flame stabilizing plate is in a circular truncated cone shape, and is provided with multiple obliquely formed ventilation holes. The hole areas of the air outlet sides of the ventilation holes gradually increase from the small-aperture side of the flame stabilizing plate to the large-aperture side of the flame stabilizing plate. The burning heating system further comprises a transposition heat exchanger arranged above the flat plate type installation panel and composed of multiple honeycomb-shaped heat exchange sheets. According to the flat plate type burner, a low-power partitioned independent atomizing and burning mode is adopted, and the atomizing effect is better. Air mixing of the flame stabilizing plate is uniform and reasonable, and burning is sufficient. The heat exchange area of the transposition heat exchanger is large, heat exchange is sufficient, and heat exchange efficiency is high.